Description of howo tractor truck 6x4:Tractor unit can be divided into two types: trailer towing vehicle and semi-trailer towing vehicle. Generally speaking,tractor' front has a headstock to drive while trailers'rear has no power system,so the latter is trailed by the former.As a professional tractor unit supplier based in China,we offer a wide range of products that includes dump truck,cargo truck,truck mounted concrete boom pump,truck crane etc.

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